lifted club cars - lifted ezgo
Home FAQDonate Who's Online
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Gas EZGO
Gas EZGO Gas EZGO Marathon, Medalist, TXT and RXV.



Post New Thread  Reply
 
Thread Tools Display Modes
Old 06-17-2013, 09:15 AM   #1
puzomatc
Not Yet Wild
 
puzomatc's Avatar
E-Z-GO
 
Join Date: May 2009
Location: Tahoe, CA
Posts: 20
Default 81 marathon "pulsing" downhill

81 marathon 2 cycle with a performance clutch. Very nice cart.
Recently as a zoom down hills, the cart pulses down hill. My best description is the cart lunges downhill. It doesn't miss on the motor, it's like it's nodding its head downhill. Can we post videos here? That would help.

Thanks
puzomatc is offline   Reply With Quote
Alt Today
BGW

Golf car forum Sponsored Links

__________________
This advertising will not be shown in this way to registered members.
Register your free account today and become a member on Buggies Gone Wild Golf Cart Forum
   
Old 06-17-2013, 05:59 PM   #2
Heliarc
Warthog cart
 
Heliarc's Avatar
E-Z-GO
 
Join Date: Aug 2011
Posts: 502
Default Re: 81 marathon "pulsing" downhill

What most people do is post the video to Youtube or some other site and put a link to it here. If you can, remove the cover right behind the seats so you can have someone drive the cart downhill and you can watch the clutches and the belts. I'm getting something similar to this myself. Did this start after the performance clutch?
Heliarc is offline   Reply With Quote
Old 06-17-2013, 08:39 PM   #3
Dave Box
Respect the Cart
 
Dave Box's Avatar
E-Z-GO
 
Join Date: May 2010
Location: Rocky Mount, Virginia
Posts: 2,190
Default Re: 81 marathon "pulsing" downhill

I am sure that you will appreciate that is is hard to diagnose a problem by remote control but here are a few scenarios.

1. The Governor. Is it adjusted right? Is it even fitted? If is is it might be worth disconnecting it just to eliminate it from the equation.

2. The fuel filter. I think that there is a clue here inasmuch as you say "downhill". Is it possible that the filter is partially blocked and when you are driving flat out the fuel supply cannot keep up until the engine slows a little.

3. The fuel supply. This has happened to me. The breather pipe became kinked so as the fuel in the carburetor bowl went down air could not get in fast enough and a vacuum was formed preventing fuel flow again until the engine slowed when it sped up and then cut out.

Dave
Dave Box is offline   Reply With Quote
Old 06-17-2013, 10:00 PM   #4
puzomatc
Not Yet Wild
 
puzomatc's Avatar
E-Z-GO
 
Join Date: May 2009
Location: Tahoe, CA
Posts: 20
Default Re: 81 marathon "pulsing" downhill

The comet clutch went on 3 years ago. This pulsing thing started end of last season. Golf cart sleeps in the garage in the winter.

The governor is not on the cart.

I'll get a couple new filters tomorrow. Couldn't hurt.

Breather pipe? That tiny little clear hose coming out the top of the carb? I'll blow through it to make sure it's all good (carb hole too).

Thanks. I need the help.

Video to come. The dog can't steer or hold a camera.

And when i say going downhill, I mean balls out 18mph! Right before I replaced the top end, I tried to blow up the motor. Screamed at 21 mph!
puzomatc is offline   Reply With Quote
Old 06-18-2013, 08:46 PM   #5
puzomatc
Not Yet Wild
 
puzomatc's Avatar
E-Z-GO
 
Join Date: May 2009
Location: Tahoe, CA
Posts: 20
Default Re: 81 marathon "pulsing" downhill

Put a new fuel filter on, arrow lining up with fuel flow. No kinks in the old one.

The breather tube had some resistance while blowing on it. I removed the hose and found the resistance was on the barb attached to the carburetor. I removed the carburetor, noticing fuel puddling on the filtered air delivery hose, and gave the carburetor a quick clean. The jet, and float assembly all look clean and move smoothly.

Movie to come shortly. The wife hates 2 cycle smell. I think it smells like pride.

Thanks for the input.
puzomatc is offline   Reply With Quote
Old 06-19-2013, 12:04 AM   #6
puzomatc
Not Yet Wild
 
puzomatc's Avatar
E-Z-GO
 
Join Date: May 2009
Location: Tahoe, CA
Posts: 20
Default Re: 81 marathon "pulsing" downhill

Video link:
About halfway through, I see the driven clutch bounce in and out. I'm guessing that is my mechanical error.

Fixes?

Thanks
puzomatc is offline   Reply With Quote
Old 06-19-2013, 04:14 PM   #7
Heliarc
Warthog cart
 
Heliarc's Avatar
E-Z-GO
 
Join Date: Aug 2011
Posts: 502
Default Re: 81 marathon "pulsing" downhill

I can't tell much from the video but I'm guessing it was lurching the whole time you shot it right? I saw something with the driven clutch but I couldn't tell what it did. I'd try some sort of rigid mount for the camera and do one of the drive clutch and one of the driven.

Blind guess, are the engine mounts shot and allowing the whole assembly to sort of swing around in the cradle?
Heliarc is offline   Reply With Quote
Old 06-20-2013, 11:08 PM   #8
puzomatc
Not Yet Wild
 
puzomatc's Avatar
E-Z-GO
 
Join Date: May 2009
Location: Tahoe, CA
Posts: 20
Default Re: 81 marathon "pulsing" downhill

A sturdier camera mount isn't going to happen. The wife hated driving it without a seat. That's all I got.

Engine mounts look good. The motor doesn't shimmy when in trying to shake it.

I'll take apart the driven clutch to see what parts are worn more than usual.

Other ideas?
puzomatc is offline   Reply With Quote
Old 06-21-2013, 03:49 AM   #9
Heliarc
Warthog cart
 
Heliarc's Avatar
E-Z-GO
 
Join Date: Aug 2011
Posts: 502
Default Re: 81 marathon "pulsing" downhill

Check out some golf courses and see where they get their carts maintained. Call all of those shops and take it in and give them a run on it. At this point I can't help anymore. Maybe someone else can but I'm out of ideas.

Failing that, I'd like to see as good of a vid as you can possibly get on that driven clutch. Even without a rigid mount theres got to be something you can brace against to get steadier on the clutch. Like I said, I saw it do *something*. That something may be completely normal or it may not.
Heliarc is offline   Reply With Quote
Reply
Go Back   Buggies Gone Wild Golf Cart Forum > Golf Cart Repair and Troubleshooting > Gas EZGO


Thread Tools
Display Modes


Similar Threads
Thread Forum
"Salty Sam's Special" Six Seat Marathon Salvage and Lift Lifted Golf Carts
Why "Carbon Fiber" "Wood grain" and Diamond Plated? Gas EZGO
Downhill operation of 97 "G16" Gas Yamaha
93 Marathon"Low power" in forward" Electric EZGO
89" Marathon with 4" lift....can I fit 23" tires??? Electric EZGO


All times are GMT -5. The time now is 06:23 AM.


Club Car Electric | EZGO Electric | Lifted Golf Carts | Gas EZGO | Used Golf Carts and Parts

Powered by vBulletin® Version 3.8.9
Copyright ©2000 - 2024, vBulletin Solutions, Inc.
This Website and forum is the property of Buggiesgonewild.com. No material may be taken or duplicated in part or full without prior written consent of the owners of buggiesgonewild.com. © 2006-2017 Buggiesgonewild.com. All rights reserved.